app.filter('sprintf', function() {
    function parse(str) {
        var args = [].slice.call(arguments, 1),
            i = 0;
    
        return str.replace(/%s/g, function() {
            return args[i++];
        });
    }

    return function(str) {
        return parse(str, arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]);
    };
});


// Usage:
$filter('sprintf')(
    "Hello %s. It's %s to see you!",
    "World",
    "very"
);